---
title: "Upcoming Change to DNS Forwarding"
slug: "upcoming-change-to-dns-forwarding"
updated: 2026-11-03T13:54:05Z
published: 2026-11-03T13:54:05Z
canonical: "knowledge.catonetworks.com/upcoming-change-to-dns-forwarding"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.catonetworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Upcoming Change to DNS Forwarding

Starting on Dec 6, 2026, Cato will update DNS Forwarding rules in your account that include a Cato DNS IP address as a forwarding destination. Please review and update these rules before this change takes effect. This change applies to the default Cato DNS IP address, 10.254.254.1, or an alternative IP address used for the same Cato DNS service if your account uses a customized reserved service range.

## What Is the Impact to My Account?

There is no impact to DNS resolution in your account. Forwarding DNS requests back to Cato’s own DNS service creates a forwarding loop. To prevent this, Cato already skips its own DNS IP address and forwards requests only to the other DNS servers configured in the rule. If no valid DNS server remains, the rule is ignored. Any rule with the forwarding loop will be updated or removed from the [DNS Forwarding page](https://knowledge.catonetworks.com/docs/defining-dns-forwarding-rules) based on the configured DNS servers. This will align your configuration with the DNS behavior already in effect.

## What Action Do I Need to Take?

Review your DNS forwarding rules in the Cato Management Application (CMA) and make the following changes:

- If a rule includes a Cato DNS IP address alongside other DNS server addresses, remove only the Cato DNS IP address and keep the other addresses.
- If a rule includes only a Cato DNS IP address, delete the rule.

Cato added validation in the CMA to prevent new DNS Forwarding rules from using IP addresses that create a forwarding loop.

## For more information

Please use the [Cato Ask AI agent](https://knowledge.catonetworks.com/v1/docs/what-is-cato-s-ask-ai-agent) in the CMA for questions related to DNS forwarding. Take me to the [CMA AI Workspace](https://externallink.cc.catonetworks.com/#/account/me/aiWorkspace).